Merhaba! I just found the most beautiful song! It is "Pişman Olduğun Zaman," and this version is sung by Mabel Matiz. But I also see that it has been sung by Sezen Aksu. Can someone tell me who originated the song? Does it really belong to Sezen Aksu?

I have tried to translate the lyrics. I have done some guessing, so please correct me.

And below is a link to Mabel Matiz´s version of the song. So sad, so beautiful!

Pişman Olduğun Zaman -- When You Regret

yolun zorunu yürümüştüm ben tanıştığımız zaman -- I had walked a road of difficulties when we met.
sen dalgalanmaktaydın elvan elvan -- You were changing colors, many colors.
o yüzden tam olarak hissedemedin sen içimi -- For that reason you could not sense as fully my inner self. 
hala kulağımda çınlıyor alaycı kahkahan -- Your loud laugh still rings derisively in my ears.

haberin yoktu henüz cilvesinden aşkın -- You had no knowledge yet of love´s vagaries.
sarsılmıyordun hiç ay tutulmasından -- You were not being shaken by any lunar eclipse.
o kadar taşkın, o kadar açtın ki; -- You were so greedy, so wild that
düşmen kaçınılmazdı arzın ortasından... -- Your falling was inevitable, from the middle of the earth ...

pişman olduğun zaman, -- When you regret, 
zevke doyduğun zaman, -- When you are fed up with pleasure,
huzur bulduğun zaman, -- When you find peace,
dönebilirsin -- You can return.

ben yine burada olacağım, -- I will still be here,
yaralarını saracağım, -- I will bandage your wounds,
seni anlayacağım... -- I will understand you ...

http://www.izlesene.com/liste/pisman-oldugun-zaman

Here is the Sezen Aksu version: http://www.youtube.com/watch?v=xHrxj4kNMrg

Teşekkürler, gokuyum! Sezen Aksu versiyonu çok güzel ama Mabel Matiz versiyonunu tercih ederim. It is so simple yet atmospheric. And the harmonies are very interesting. That is why I wondered who had written this song.

I had thought that "Sahilde Bir Sarhoş" was a Teoman song, but then I discovered that Matiz had actually written it. Another great song, in either version:

Mabel Matiz: http://www.izlesene.com/liste/sahilde-bir-sarhos

Teoman: http://www.izlesene.com/video/teoman-sahilde-bir-sarhos/6832022